题目内容
External interrupt 0 can interrupt the interrupt service program of external interrupt 1.
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Interrupt service subroutine can be called directly.
On the premise of interrupting, as long as the interrupt source sends an interrupt request, the CPU will respond to the interrupt immediately.
In the internal structure of MCS-51 single chip microcomputer, tmod is the mode control register, which is mainly used to control the start and stop of timer.
In the internal structure of MCS-51, TCON is the control register, which is mainly used to control the start and stop of timer.
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